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LPG systems for engines – C5D

Standards for installing and maintaining engines fuelled by liquefied petroleum gas (LPG).


Download NSCV Sub-section C5D - LPG systems for engines PDF354.19 KB


Full title 

National Standard for Commercial Vessels 

Part C - Design and construction 

Section 5 - Engineering 

Sub-section 5D - LPG systems for engines

Current edition

Edition 1.1

Commenced 10 June 2016


NSCV C5D provides requirements for liquid withdrawal systems for internal combustion engines using liquefied petroleum gas (LPG) as fuel. 

This includes but is not limited to: 

  • system design and installation 
  • testing, commissioning, and inspection 
  • methods of leak detection 

This subsection applies to: 

  • all domestic commercial vessels with engines using liquefied petroleum gas (LPG) as fuel 

Please note that your state or territory marine and energy supply authorities may have additional requirements for LPG systems. 

SupersededSuperseded standards for commercial vessels
Assistance and tools 

Guidance notices and fact sheets for domestic commercial vessel owners and operators

Uniform Shipping Laws code


Policy and Regulation Division

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Please include the name and clause number of the NSCV in the email.

For enquiries relating to an application please email dcvsurvey@amsa.gov.au

Last updated: 1 August 2023